Ammonia, anhydrous and aqueous, manufacturing

Ammonium nitrate manufacturing

Ammonium sulfate manufacturing

Anhydrous ammonia manufacturing

Fertilizers, mixed, made in plants producing nitrogenous fertilizer materials

Fertilizers, natural organic (except compost), manufacturing

Fertilizers, of animal waste origin, manufacturing

Fertilizers, of sewage origin, manufacturing

Nitric acid manufacturing

Nitrogenous fertilizer materials manufacturing

Plant foods, mixed, made in plants producing nitrogenous fertilizer materials

Urea manufacturing